Johnson Matthey Public Limited Company

Ballard Power Systems Corporation

Robert J Potter

John Malcolm Gascoyne

Jan Denton

David P Wilkinson

David Thompsett

Mark Christian Johnson

Thomas Robertson Ralph

Timothy Ian Hyde

Myles L Bos

Alec Gordon Gunner

Charles P Asman

Jeffrey S Buchanan

A gas diffusion electrode comprising a non-woven network of fibers, one or more catalysts components and at least one polymeric substance characterised in that the catalyst is embedded within the fiber network is disclosed.

Gas diffusion electrodes

A novel catalyst comprising a Pt--M alloy wherein M is one or more metals selected from the transition metal elements or from Groups IIIA or IVA of the Periodic Table in 'Handbook of Chemistry and Physics' 64th Edition, CRC Press, and Y wherein Y is a bronze forming element or an oxide thereof, characterised in that the Pt--M alloy is in intimate contact with Y, and provided that M is not Ru if Y is WO.sub.3 is disclosed and which may be used as a poison tolerant catalyst for use in fuel cells, specifically as the anode of a PEM fuel cell.

Catalyst

A gas diffusion electrode comprising a non-woven network of fibres, one or more catalysts components and at least one polymeric substance characterized in that the catalyst is embedded within the fibre network is disclosed.

In an electrochemical fuel cell, an electrode substrate has an in-plane nonuniform structure. The electrode substrate having an in-plane nonuniform structure enables controlled transport of reactant toward the electrocatalyst layer and controlled transport of reaction product away from the electrocatalyst layer.

Electrochemical fuel cell with an electrode substrate having an in-plane

An electrocatalyst material for use in an acid electrolyte environment, comprising platinum or a platinum alloy supported on a conductive support, and gold, gives unexpectedly improved performance over similar electrocatalysts without gold.

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Chalkhouse Green, United Kingdom

Robert J Potter